A statement on their website reads: "Chas recently underwent hospital tests which revealed cancer of the oesophagus. Luckily this has been spotted at an early stage and he’ll be undergoing treatment immediately.

"Chas expects to be back out on the road with Dave again soon but, in the meantime, the Potters Bar, Norwich, and Milton Keynes dates on the 17th, 18th, and 19th of February will need to be rescheduled.

"Apologies to ticket-holders for the inconvenience. The venues themselves will advise regarding re-scheduling/refunds etc."